Mrkayak's got a good point, especially considering a winter trip. Ask yourself how much margin of safety you've got with the other boats & what skills and abilities your crew has. Would your crew be able to handle another flipped boat, another swimmer, and you, all at the same time?
When you're down there, each day you should plan how you run a rapid considering where you are during the day. For instance, a more conservative line would be better if it's getting late in the day or if you've still got some big stuff to run.
As for a 14' boat, I felt really good in the midst of 4 big 18' gearpigs with a bunch of strong kayakers and duckies around. My tactic was to take the sneak lines on the big stuff and then I had a blast on all the rapids no one ever mentions. Watch out for Sapphire and remember that Mile 209 has a great pullover spot for snacks and scouting.
Enjoy all that fine whitewater down thare!
Nothing in the world is more yielding and gentle than water. Yet it has no equal for conquering the resistant and tough. The flexible can overcome the unbending; the soft can overcome the hard. - Lao Tse